Determine how much tin can be heated from -50 C to 323 K by reporting the amount of heat equal to 25 kJ.

univerkov | July 17, 2021 | education

Initial data: tн (initial temperature of tin) = -50 ºС; tк (final temperature of tin heating) = 323 К (50 ºС); Q (heat reported to tin) = 25 kJ (25 * 10 ^ 3 J).

Reference values: according to the condition Co (specific heat of tin) = 250 J / kg.

We express the mass of heated tin from the formula: Q = Co * m * (tc – tn), whence m = Q / (Co * (tc – tn)).

Calculation: m = 25 * 10 ^ 3 / (250 * (50 – (-50))) = 1 kg.

Answer: You can heat 1 kilogram of tin.

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